Square.



MMM www ffmw cfm/e3, 'op

PATENTED SEPT. a, 190,7...

TSPARK'S.

l librerie rut :msm: series co.. vusumsmrv, o. c,

PATENT OFFICE.

TAI-IASKA SPARKS, OF ST. LOUIS, MISSOURI.

SQUARE Specification of Letters Patent.

Patented Sept. 3, 1907.

Application iiled February 6, 1907. Serial No- 856,123.

To all whom it may concern:

Be it known that I, TAHASKA SPARKS, a citizen oi the United States, and a resident of St. Louis, Missouri, have invented certain new and useful Improvements in Squares, oi which the following is a specification.

This invention relates to improvements in squares and consists of the novel arrangement, construction and combination oi parts as will be iully hcreinaiter described and claimed.`

The object oi this invention is to construct a square designed to be taken apart'so as to be more readily packed within the tool box or chest without one end oi the same projecting and inconveniencing the mechanic while carrying the kit oi tools from one location to the other.

A further object oi my invention is to construct a square to be taken apart and when placed together to be absolutely true and the sides perfectly Iiush.

In the drawings- Figure l is a perspective view oi my complete invention. Fig. 2 is a perspective view with parts broken away and in section, showing the two sections oi' the square inthe act of being placed together. Fig. 3 is a cross-sectional view taken on the line 3*-3 oi Fig. l.. Fig. 4 is a plan view oi a corner of the square with parts broken away and in section, showing the two membersin their relative position. Fig. 5 is an elongated sectional view of a part oi the square taken on the line 5-5 oi Fig. l.. Fig. G is a detail perspective view oi a portion oi the square showing the location oi the locking member,

In the construction ol my invention I provide a square composed oi two sections 7 and 8, the section 7 having its upper end or that portion forming the c'orner oi the square provided with a mortise 9` and an elongated groove l0; the two walls oi said groove being dovetailed indicated by the numeral 1l.

The section 8 is provided with a tenen l2 to which is integrally formed a projecting strip I3, its edges beveled or dove-tailed as indicated by the numeral 14 and arranged to lit within the groove l0 in the member 7.

In the strip I3 is lornied an aperture l5 in which lits a pin 1G passing through the member 7 and rigidly attached to a spring-strip I7, the said spring-strip 17 being located in a recess I8 iormed in the section 7 opposite to the elongated groove l0, and the said springstrip I7 being secured at its low( st end to the strip by means oi the pin or `rivet 19, and in order to gain access to the strip so that the same :may be pulled outwardly as indicated by the dotted lines in Fig. 5, I extend the upper end oi the recess 18 beyond the' strip 17 (see Fig. 5), so that the finger nail may be inserted to operate the strip and remove the pin 16 from the aperture l5.

By this arrangement, when both sections are placed in position as shown in Figs. l and 4, a perfect rightangle is iorIned and the same is prevented from becoming out oi square by means oi the ends 20 contacting with the wall 2l, the lower edge 22 contacting with the surface 23 oi the mortise and the edges 2li contacting with the edges 25, together with the strip I3 held in the groove 10, and when the sections are placed together the surfaces ol' the square are absolutely lree from projections and all oi the parts being `[lush so that either side oi the square can be used ireely.

By constructing a square in this manner, when the same is taken apart it can be readily packed within the tool-chest and conveyed without one end oi the square projecting through the chest as is necessary in the present style.

Having iully described my invention, what I claim 1. A square comprising two sections, one of said sections provided with an elongated groove on its one side and a recess on the opposite side, a projection formed on the other section provided with an aperture and arranged to Iit one with the other, forming a true square and a spring strip for locking the same together, substantially as speci lied.

2. A square comprising two secticns, 'a dove-tailed groove formed in one section, a dove-tailed strip carried h v the other section, the one section provided with a niortise, the other section with a tenen, said sections arranged to he inserted one within the other to form a true right-angle, and a spring locking device for securing said sections together, substantially as speciiicd.

A device of the class described comprising two sections, a tenen formed on one section, a dove-tailed strip provided with au aperture connected to the tenen and projecting at rightangles thereto, a dove-tailed groove formed in the other member to receive the strip, a niortise formed in the second member to receive the tenon, a spring-strip provided with a pin to engage in an aperture formed in the strip to lock said sections together, the several parts when connected forming ati-ue rightangle and preventing the same from becoming out o1 square, substantially as specified.

4. A square of the class described comprisingl two sections, a tenen `formed on one section, an elongated dovetailed strip formed integral with said tenen and projecting at right angles therefrom, a mortise formed in the other section for the insertion of the tenon, an elongated dove-tailed groove formed in said section for receiving the elongated dove-tailed strip, the said strip and the member in which it is inserted being provided with apertures both in alineinent when the sections are in position, a recess formed in the one section opposite to the elongated dovetailed groove, a spring strip located in the recess, and a pin carried by the springstrip to pass through the apertures for locking,l the sections together, substantially as specified.

In testimony whereof, I have signed my naine to this specification, in presence of two subscribing witnesses.

THASKA S/IARKS.

Witnesses ALFRED A.EICKS, WALTER C. STEIN. 

